STMicroelectronics TSC202x

TSC2020, TSC2021 and TSC2022 are a series of precision bidirectional current sense amplifier. They can sense current via a shunt resistor over a wide range of common-mode voltages, from -4 to +100 V, whatever the supply voltage is. It is able to sense very low drop voltages, minimizing measurement error. TSC2020, TSC2021 and TSC2022 are current sense amplifiers that may be used for various functions like precision current measurement, overcurrent protection, current monitoring, and feedback loops. These devices fully operate over the supply voltage range of 2.7 to 5.5 V, and over an ambient temperature range of -40 to 125 °C.

Key features

• Common-mode rejection is 112dB typ (V_ICM = - 4 to 100V, DC mode, T = 25°C)
• Offset voltage is 150µV max (V_ICM = 12V, V_REF = 1.35V, T = 25°C), AEC-Q100 qualified
• Offset drift vs. temperature is 0.5µV/°C max (V_ICM = 12V, Tmin <lt/> T <lt/> Tmax, T = 25°C)
• Enhanced PWM rejection, gain is 20V/V typ (- V_CC = 2.7V, V_ICM = 48V, T = 25°C)
• Gain error is 0.01% typ (ΔV_OUT = 100mV to (V_CC - 100mV), T = 25°C)
• Gain error drift is 3.5ppm/°C max (Tmin <lt/> T <lt/> Tmax, - V_CC = 2.7V, V_ICM = 48V, T = 25°C)
• Small signal -3dB bandwidth is 650kHz typ (R_L = 10Kohm, C_L = 100pF, T = 25°C)
• Slew rate is 1.8V/µs typ (C_L = 100pF, V_ICM = 1V, T = 25°C)
• Supply voltage rejection is 118dB typ (V_CC = 2.7 to 5.5V, T = 25°C)
• MiniSO8 package, operating free-air temperature range from -40 to 125°C

Applications

• High-side/low-side current sensing
• Battery management system
• 48 V power distribution
• 48 V power tools
• Motor control
• Automotive